Re: [Homebrew_PCBs] PCB Software?
2005-11-19 by eid0
... A very very good free (as speetch) pcb software is kicad.It s multiplatform. http://www.lis.inpg.fr/realise_au_lis/kicad/ Greets Eid0
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Re: [Homebrew_PCBs] Re: Thin Copper Clad?
2005-11-19 by Mike Young
... From: Stefan Trethan ... More like 12.9 8x10 boards. Give or take. :)
Re: [Homebrew_PCBs] Re: Thin Copper Clad?
2005-11-19 by Mike Young
... From: bob_ledoux ... I had a few pads and traces lift from those boards. I wouldn t attribute it to the lighter copper entirely
Re: laser printer transparency film any good?
2005-11-19 by matt clement
okay I figured the printer would get oily with the oil method, but didnt think it would leave the printer too bad off. I am going to pick up a tube of RTV
Re: [Homebrew_PCBs] Re: Thin Copper Clad?
2005-11-19 by Stefan Trethan
On Sat, 19 Nov 2005 15:58:28 +0100, bob_ledoux ... I don t think so. It will lift if the pad is to small, just like the 35u one. You
Re: Thin Copper Clad?
2005-11-19 by bob_ledoux
I notice that Pulsar.gs (The Toner Transfer sheet people) sell 2-8x10 inch pieces of .032 board, coated with 0.5 ounce copper for about $17 through Digikey.
Re: [Homebrew_PCBs] Re: Diptrace
2005-11-19 by Mark E. Haase
Maybe he s talking about the auto-router. You could set the top layer cost to the max value (99 I think) and then it will put far fewer traces on the top
Re: Diptrace
2005-11-19 by adicont2
Of course you can make sigle sided board. You can use whitch layer you need. The problem whits this free software is output limitations. You can t make a
Re: [Homebrew_PCBs] Diptrace
2005-11-19 by Stefan Trethan
... Well, who forces you to put traces on the top layer? Just leave it empty. ST
Re: Diptrace
2005-11-19 by Bob_xyz
... ... sided boards? ... I doubt it but the best place to get the answer to that question is: http://groups.yahoo.com/group/diptr The author of
Diptrace
2005-11-19 by Lez
Just downloaded and had a play. Now I only ever do simple boards, say an 18pin PIC and a few support components. It seems it only does double sided or
Re: [Homebrew_PCBs] PCB Software?
2005-11-19 by eid0
A very very good free (as speetch) pcb software is kicad.It s multiplatform. http://www.lis.inpg.fr/realise_au_lis/kicad/ Greets Eid0
Re: [Homebrew_PCBs] laser printer - WindowsXP to Macintosh
2005-11-19 by whoop@blueyonder.co.uk
... Hmmn, I don t think so on this model. You can on an Apple Personal LaserWriter NTR which is the only one which had a parallel port built in. Basically the
Re: [Homebrew_PCBs] Re: laser printer transparency film any good?
2005-11-19 by Stefan Trethan
... Because you mightn t get what you want any other way. I haven t got any reynolds paper here, but all baking papers i tried were way too slippery for TT.
Re: [Homebrew_PCBs] Re: Thin Copper Clad?
2005-11-19 by Stefan Trethan
... nope. derate for current as well. I use 18u all the time, no probs, etches quicker. ST
Re: [Homebrew_PCBs] Re: laser printing directly to the copper boards?
2005-11-19 by Stefan Trethan
Sb. that left the group (i think) tried using a intermediate drum. Basically a (silicone rubber i think) drum that contacts the photodrum, and below it passes
Re: [Homebrew_PCBs] SMT resistor vias
2005-11-19 by Stefan Trethan
You know, a company i worked for, they pressed in 0.64mm headers into THP boards, as backplane, press fit, no soldering, and it worked well. I reckon if one
Re: [Homebrew_PCBs] Thin Copper Clad?
2005-11-19 by Stefan Trethan
you can readily get thin stock which is intended for laminating together as a multilayer. I have some 0.5mm, which works basically just the same as 1mm or
Re: [Homebrew_PCBs] laser printer - WindowsXP to Macintosh
2005-11-19 by Alan King
... I think I just tossed what you needed on the last trip to the dumpster.. Wasn t going to get $5 for the converter on Ebay.. I ve got another similar port
Re: [Homebrew_PCBs] Re: Thin Copper Clad?
2005-11-19 by Mike Young
Cladding thickness can be a concern if you re moving power around. Trace widths will be twice as wide for the same current capacity compared to 1 oz copper.
Re: Thin Copper Clad?
2005-11-19 by ballendo
Hello, Flexing of the board ruining your solder connections comes to mind... This thin board material is not meant to be used by itself. It is sold to be
RE: [Homebrew_PCBs] Fuser advice
2005-11-19 by Morris Odell
... I started off with Epson photo inkjet paper No S041140 which is the Rolls Royce solution - works perfectly but expensive! Now I use Nopa Color 100 gsm
Re: Thin Copper Clad?
2005-11-19 by Jim Miller
Also any reason not to use 1/2oz? Other than potential heatsink issues? tnx jim [Non-text portions of this message have been removed]
Thin Copper Clad?
2005-11-19 by Jim Miller
What s the thinnest copper clad material folks have successfully worked with? What are the issues with working with boards as thin as 0.005 ? I found this
Re: [Homebrew_PCBs] Re: laser printing directly to the copper boards?
2005-11-19 by Alan King
... They depend on the high insulation properties of paper to hold the charge, and it s induced by the corona wire. Yes copper will redistribute the charge.
Re: [Homebrew_PCBs] developing Aqua-Mer PR photoresist film
2005-11-19 by Russell Shaw
... It may work too. I m not so familiar with all the chemical alternatives. I couldn t find references on google. To use sodium silicate for positive resist,
Re: [Homebrew_PCBs] Re: laser printer transparency film any good?
2005-11-19 by Alan King
... http://i2.peapod.com/c/4V/4VZSC.jpg Why make silicone paper? :) Alan
Re: [Homebrew_PCBs] SMT resistor vias
2005-11-19 by Alan King
... With ceramic instead of copper, should have less expansion etc. All zero ohm resistors would make it no real component to see anyway, just a nice little
Re: [Homebrew_PCBs] SMT resistor vias
2005-11-18 by Alan King
... Rectangular is as good or better. Right size with right size hole and it ll insert a bit easier than an equally tight round one, and still have good grip.
Re: [Homebrew_PCBs] developing Aqua-Mer PR photoresist film
2005-11-18 by David Griffith
... I remember sodium silicate being referenced as a developer. Is that only for positive spray resist? -- David Griffith dgriffi@cs.csubak.edu
Re: [Homebrew_PCBs] Re: laser printer transparency film any good?
2005-11-18 by Stefan Trethan
On Fri, 18 Nov 2005 23:49:55 +0100, matt clement ... It needn t be spread perfectly at all. with a wide squeegee you can spread it
laser printer - WindowsXP to Macintosh
2005-11-18 by Jim Larsen - AL7FS
Does anyone know if the old early 1990s Mac Laser Printer can be made to print from Windows XP? This is an Apple Personal LaserWriter LS manufactured in May
Re: [Homebrew_PCBs] developing Aqua-Mer PR photoresist film
2005-11-18 by Russell Shaw
... Sodium hydroxide is stripper. Try 10g/L sodium carbonate at 25-30degC.
laser printers without the paper tray cant reprint accurately??
2005-11-18 by matt clement
my new laser printer doesnt have the drawer with the 4 sided paper holder like the more expensive printers do. I know i get better results when i reprint the
Re: laser printing directly to the copper boards?
2005-11-18 by matt clement
okay after doing some reading, it looks like the laser printers spray a charge onto the paper and the toner statically attracts to the charged spots.
Re: laser printer transparency film any good?
2005-11-18 by matt clement
i dont see how you would get the rtv silicone spread perfectly even without any peaks that would cause it to not transfer the toner correctly. i started
Re: [Homebrew_PCBs] laser printer transparency film any good?
2005-11-18 by Stefan Trethan
I tried it, but can t get good density on OHP. Sb. reported good results if i remember correctly, beeing able to peel the plastic right off. BUT, if you look
Re: laser printing directly to the copper boards?
2005-11-18 by lcdpublishing
I suppose someone has tried it but I wouldn t think the printer would last very long. There is a green translucent plastic drum inside the toner cartridge. I
laser printing directly to the copper boards?
2005-11-18 by matt clement
Does anyone have any specifics on converting a laser printer to print the toner directly to the boards? it would be great for the first side, but then how
laser printer transparency film any good?
2005-11-18 by matt clement
I was wondering if people use the toner transfer method with the clear laser print transparency sheets?? I like the ability to see through the film for
developing Aqua-Mer PR photoresist film
2005-11-18 by David Griffith
I ve acquired a roll of liquidated Aqua-Mer PR photoresist film that I intend to cut up into smaller quantities for sale on Ebay (toot! toot!). My question:
Re: [Homebrew_PCBs] SMT resistor vias
2005-11-18 by Stefan Trethan
On Fri, 18 Nov 2005 15:24:09 +0100, Peter Harrison ... Not really for me. TT, when it s done, leaves a pretty normal board, i had no worries there. But having
Re: [Homebrew_PCBs] SMT resistor vias
2005-11-18 by Peter Harrison
... Curiously enough, that is almost exactly what went through my mind when I first came across the idea of re-melting laser toner onto copper as an etch
Re: transfer paper
2005-11-18 by lcdpublishing
... subjective ... Thanks for pointing that out Stefan, I just added a few more records there covering my printers and tests. Didn t know that resource was
Re: Not anything to do with exposure boxes whatever !
2005-11-18 by lcdpublishing
I tin after etching, befor etching would be more difficult in the toner transfer process unless you get a perfectly smooth surface. The cost of toner is about
Re: [Homebrew_PCBs] SMT resistor vias
2005-11-18 by Stefan Trethan
On Fri, 18 Nov 2005 11:05:53 +0100, Mike Young ... my advice is: avoid it! ;-) if there s space, lift the trace, drill a larger hole
Aligning artwork
2005-11-18 by Mike Young
This evening, I got both board edge lines on the silkscreen transfer to completely overlay their corresponding 1.6 mil traces in the copper for its full
Re: [Homebrew_PCBs] SMT resistor vias
2005-11-18 by Mike Young
... From: David Griffith ... Now he tells me. :) What a pain the arse *that* is. I just reworked a DS board to single side, and got
Re: [Homebrew_PCBs] Fuser advice
2005-11-18 by Stefan Trethan
... I find 160C to be the minimum, with a layer of cardboard you will want more like 180C. (That is with my slow moving fuser). Power of mine must be like 1kW
Re: [Homebrew_PCBs] SMT resistor vias
2005-11-18 by Stefan Trethan
On Fri, 18 Nov 2005 10:04:33 +0100, David Griffith ... It s called MELF (better mini-melf) But square parts should fit as well. I find